SNAD-IFAS工艺对污泥消化液的处理效能  

Performance of SNAD-IFAS Process for Sludge Digestion Liquid Treatment

作　　者：邹瑜 张国权[2] 徐晓晨[2] 杨凤林[2] ZOU Yu;ZHANG Guo-quan;XU Xiao-chen;YANG Feng-lin(China Vanke Co.Ltd.,Shenzhen 518000,China;Key Laboratory of Industrial Ecology and Environmental Engineering,School of Environmental Science and Technology,Dalian University of Technology,Dalian 116024,China)

机构地区：[1]万科企业股份有限公司,广东深圳518000 [2]大连理工大学环境学院工业生态与环境工程教育部重点实验室,辽宁大连116024

出　　处：《中国给水排水》2021年第13期14-20,共7页China Water & Wastewater

基　　金：中国博士后科学基金资助项目(2020M672845)。

摘　　要：污泥消化液作为污泥厌氧处理过程的副产物,具有低碳高氮的特点,传统生物脱氮技术难以有效处理。为此,利用固定生物膜-活性污泥反应器(IFAS),考察同步硝化、厌氧氨氧化和反硝化(SNAD)工艺对污泥消化液的处理效能。结果表明,在进水NH^(+)_(4)-N浓度为400 mg/L、HRT为18 h的最佳运行条件下,SNAD-IFAS系统对NH^(+)_(4)-N、TN与COD的最大去除率分别达到92.6%、77.1%和69.4%,TN去除负荷为12.4 mg/(L·h)。菌群特性活性分析结果表明,亚硝化过程主要发生在悬浮污泥中,厌氧氨氧化与反硝化过程主要发生在生物膜上。微生物群落分析表明,HRT的变化会显著影响微生物群落结构。As a by-product of sludge anaerobic treatment process, sludge digestion liquid has the characteristics of low carbon and high nitrogen concentrations, which cannot be effectively removed by traditional biological nitrogen removal technology. Therefore, the treatment performance of simultaneous nitrification, ANAMMOX and denitrification(SNAD) process for simulated sludge digestion liquid in an integrated fixed-biofilm activated sludge(IFAS) reactor was investigated. Under the optimal operational conditions(influent NH^(+)_(4)-N of 400 mg/L and HRT of 18 h), the maximum removal efficiencies of NH^(+)_(4)-N, TN and COD by SNAD-IFAS system were 92.6%, 77.1% and 69.4%, respectively, and the TN removal load was 12.4 mg/(L·h). Specific activity analysis of bacteria showed that nitrification process mainly occurred in the suspended sludge and ANAMMOX and denitrification mainly occurred on the biofilm. Microbial community analysis showed that HRT significantly affected the microbial community.

关 键 词：污泥消化液 固定生物膜-活性污泥反应器 同步硝化、厌氧氨氧化和反硝化 

分 类 号：TU992[建筑科学—市政工程]